Portable telephone



FIG. 1 is a front, top and right side perspective view of a portabletelephone showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a plan view thereof; and,

FIG. 6 is bottom plan view thereof.

The ornamental design for a portable telephone, as shown and described.